From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by mail.toke.dk (Postfix) with ESMTPS id 736FB9FEBE1 for ; Mon, 17 Apr 2023 20:50:07 +0200 (CEST) Authentication-Results: mail.toke.dk; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=oXrHVDg2 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3513C60B8F; Mon, 17 Apr 2023 18:50:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B9596C433EF; Mon, 17 Apr 2023 18:50:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1681757405; bh=/SYyLnfM82MmE33YFZCDJXYlbvQSEgvgV14fp98uexE=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=oXrHVDg2ba3fKunDg88Fyb82QGklmMqoMwObeUyGwXoO78uAk+srLuf2KLzqZ6ZJm JBPV/Y2NYMQTNLEZcQc6bJHDCSqLDfKfrtyxk2ihTQLkvg4hFTOpU4gbJAIDh1UJxE IiRli5a/Q/hCmFRpE8ERVr45SZEPX5gmLI7XQDGNig7c7f2dkmJz62cEijFOiA01qy kPEvx7f6D6kNXjovR8vmKYvaMRojpp5rxn0848rZPzQHzVin+4N+lcWm3tl7PnIsAf HKLjvktaoQsne9EW3vECUV/W7qfPfBGEHfm8zXyMiOkvdpbV7z3QW2ScC8b7tCjM7G CNMJUt50vFSKw== Date: Mon, 17 Apr 2023 11:50:03 -0700 From: Jakub Kicinski To: "Zulkifli, Muhammad Husaini" Message-ID: <20230417115003.0d2ac372@kernel.org> In-Reply-To: References: <20230414154902.2950535-1-yoong.siang.song@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Message-ID-Hash: UDOUWX4O3Y2ISFWZBKBXPYNMVLQG7Y4O X-Message-ID-Hash: UDOUWX4O3Y2ISFWZBKBXPYNMVLQG7Y4O X-MailFrom: kuba@kernel.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: "Song, Yoong Siang" , "Bezdeka, Florian" , "Brandeburg, Jesse" , "Nguyen, Anthony L" , "David S . Miller" , Eric Dumazet , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , "Fijalkowski, Maciej" , Vedang Patel , "Joseph, Jithu" , Andre Guedes , "Brouer, Jesper" , Stanislav Fomichev , "Keller, Jacob E" , David Laight , "xdp-hints@xdp-project.net" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" , "intel-wired-lan@lists.osuosl.org" , "bpf@vger.kernel.org" X-Mailman-Version: 3.3.8 Precedence: list Subject: [xdp-hints] Re: [PATCH net v3 1/1] igc: read before write to SRRCTL register List-Id: XDP hardware hints design discussion Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On Mon, 17 Apr 2023 02:53:13 +0000 Zulkifli, Muhammad Husaini wrote: > Are you observing similar issue like below? > ptp4l: timed out while polling for tx timestamp > ptp4l: increasing tx_timestamp_timeout may correct this issue > > If yes, only TXSTAMPO register is used for both PTP and non-PTP packets in > the current driver code. There is a possibility that the time stamp > for a PTP packet will be lost when there is a lot of traffic when multiple > applications request for hardware transmission timestamps. > Few months back, I submitted a patch series to enable the DMA > Timestamp for non-ptp packet which can resolve the above issue. > https://lore.kernel.org/netdev/20221018010733.4765-1-muhammad.husaini.zulkifli@intel.com/T/ > Will continuing back the activity soon. FWIW the work on selecting the source of the timestamp is progressing slowly: https://lore.kernel.org/all/20230406173308.401924-1-kory.maincent@bootlin.com/